6Although the TOEFL iBT(R) does not have a discrete grammar section, knowledge of English sentence structure is important throughout the test. Essential Grammar for the iBT reviews the skills that are fundamental to success on the Internet-based TOEFL, the paper-based TOEFL, and other standardized tests. Content includes noun and verb forms, clauses, agreement, parallel structure, punctuation, and much more. The book may be used in conjunction with other texts in the series or as a stand-alone grammar text for intermediate and advanced students. The book contains 20 units covering vital points of sentence structure; abundant practice in TOEFL-like questions; listening texts on audio CD; a diagnostic test and review quizzes; an answer key, audio scripts, and an index.